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Showing posts with label Solar System. Show all posts
Showing posts with label Solar System. Show all posts

Statistics of the Earth & Sun



Surface Area : 510,100,500 Sq.Kms.

Land Surface : 148,950,800 Sq.Kms. (29.08%)

Water Surface : 361,149,700 Sq.Kms.(70.92%)

Equatorial circumference : 40,075 Kms.

Polar circumference : 40,008 Kms

Equatorial radius : 6,377 Kms.

Equatorial Diameter : 1,22,756 Kms.

Polar radius : 6,357 Kms.

Polar Diameter : 12,714 Kms.

Mean distance from the Sun : 14,95,97,900 Kms.

Period of revolution : 365 days 5 hours 48 mts, 45.51 Sec.

Period of rotation : 23 hrs. 56 mts. 4.091 Sec.

Escape Velocity from the earth : 11 Km per Sec. (minimum)

Continents :

Continent Total Area
(sq.kms)
Total landmass % Population Total Pop. % Pop. Density
per sq.kms
Asia 43,820,000 29.5% 3,879,000,000 60% 86.70
Europe 10,180,000 6.8 % 731,000,000 11% 69.7
Africa 30,370,000 20.4% 922,011,000 14% 29.30
North America 24,490,000 16.5% 528,720,588 8% 21.0
South America 17,840,000 12.0%   382,000,000 6% 20.8
Australia 9,008,500 5.9% 32,000,000 0.5% 3.6
Antarctica 13,720,000 9.2% 1,000 0.00002% 0.00007

The highest and lowest points in the Continents :

Continent Highest Point Height (mts) Lowest Point Height (mts)
Asia Mount Everest 8,848 Dead Sea -408
Europe Mount Elbrus 5,633 Caspian Sea -28
Africa Mount Kilimanjaro 5,895 Lake Assal -155
North America Mount McKinley 6,198 Death Valley -86
South America Aconcagua 6,960 Laguna del Carbon -105
Australia Puncak Jaya 4,884 Lake Eyre -15
Antarctica Vinson Massif 4,892 Bentley Subglacial Trench -2,540

World Oceans :

Ocean Area (sq. miles) Average Depth (ft) Deepest Depth (ft)
Pacific Ocean 64,186,000 15,215 Mariana Trench,
36,200 ft deep
Atlantic Ocean 33,420,000 12,881 Puerto Rico Trench,
28,231 ft deep
Indian Ocean 28,350,000 13,002 Java Trench, 25,344 ft deep
Southern Ocean 7,848,300  13,100 - 16,400 the southern end of the South Sandwich Trench,
23,736 ft deep
Arctic Ocean 5,106,000 3,953 Eurasia Basin, 17,881 ft deep

Last updated on: 01/10/2019

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Planets of Solar System



(1) MERCURY :

It is the planet nearest to the earth.

Average distance to the Sun : 57.6 Million Kms.

Diameter : 4,849.6 Kms.

Period of revolution : 88 days

Period of rotation : 58 days 15 hrs 30 mts. 34 sec.


(2) VENUS:

It is also known as the Morning Star or the Evening Star. It is the brightest of all the planets.

Diameter : 12,032 Kms.

Period of revolution : 225 days

Period of rotation : 243 days 14mts.


(3) EARTH :

Equatorial diameter : 12,756 Kms.

Polar diameter : 12,714 Kms.

Distance from the Sun : 149,597,900 Kms.

Period of revolution : 365 days 5 hrs, 48 mts, 45.51 sec.

Period of rotation : 23 hrs 56 mts. 4.09 sec.



(4) MARS :

Diameter : 6,755.2 Kms.

Distance from the Sun : 225.6 Million Kms.

Period of revolution : 687 days

Period of rotation : 24 hrs 37 mts. 22.663 sec.



(5) JUPITER :

This is the largest planet in the solar system.

Diameter : 141,968 Kms.

Distance from the Sun : 772.8 Million Kms.

Period of revolution : 11.9 years

Period of rotation : 9 hrs 50 mts. 30 sec.



(6) SATURN :

It was discovered by Galileo.

Diameter : 119,296 Kms.

Distance from the Sun : 1,417.6 Million Kms.

Period of revolution : 29.5 years

Period of rotation : 10 hrs 14 mts.



(7) URANUS :

Diameter : 52,096 Kms.

Distance from the Sun : 2,852.8 Million Kms.

Period of revolution : 84 years

Period of rotation : 16 hrs 10 mts.


(8) NEPTUNE :

Diameter : 49,000 Kms.

Distance from the Sun : 4,497 Million Kms.

Period of revolution : 165 years

Period of rotation : 18 hrs 26 mts.



(9) PLUTO :

Pluto is a dwarf planet. This is the coldest and smallest of all planets. It is also the most distant one.

Diameter : 3,040 Kms.

Distance from the Sun : 5,865.6 Million Kms.

Period of revolution : 248 years

Period of rotation : 6 days 9 hrs and 18 mts.

MOON : Moon is earth's satellite.

Its period of rotation and Period of Revolution are the same. i.e.29 1/2 days.



Last updated on: 01/10/2019
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Solar system


Our solar system consists of the Sun, and everything bound to it by gravity — the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, dwarf planets such as Pluto, dozens of moons and millions of asteroids, comets and meteoroids.

Beyond our own solar system, there are more planets than stars in night sky. So far, we have discovered thousands of planetary systems orbiting other stars in the Milky Way, with more planets being found all the time.

Most of the hundreds of billions of stars in our galaxy are thought to have planets of their own, and the Milky Way is but one of perhaps 100 billion galaxies in the universe.

Our solar system extends much farther than the eight planets that orbit the Sun. The solar system also includes the Kuiper Belt that lies past Neptune's orbit. This is a sparsely occupied ring of icy bodies, almost all smaller than the most popular Kuiper Belt Object, dwarf planet Pluto.

The Solar System formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system's mass is in the Sun, with the majority of the remaining mass contained in Jupiter.

The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer planets are giant planets, being substantially more massive than the terrestrials.

The two largest, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed mostly of substances with relatively high melting points compared with hydrogen and helium, called volatiles, such as water, ammonia and methane.

All eight planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.

The solar wind, a stream of charged particles flowing outwards from the Sun, creates a bubble-like region in the interstellar medium known as the heliosphere.

The heliopause is the point at which pressure from the solar wind is equal to the opposing pressure of the interstellar medium; it extends out to the edge of the scattered disc.

The Solar System is located in the Orion Arm, 26,000 light-years from the center of the Milky Way galaxy.

The statistics of the sun and the planets are given below :

Age : About 5 Billion years

Distance : 149.8 Million Kms

Diameter : 1,38,400 Kms.

Photosphere temperature : 5,770 K

Core temperature : 150,000,000 K

Absolute visual magnitude : 4.75

Rotation (as seen from the earth at the equator) : 25.38 days

Rotation (near the poles) : 33 days

The sun consists of 71% of Hydrogen, 26.5% Helium and 2.5% of other elements.

The rays of the Sun take about 8 minutes to reach the earth.

Last updated on: 01/10/2019

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